Operation & Maintenance Manual
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LG946L Wheel Loader
34
after finishing welding. The temperature and pressure of hydraulic oil, fuel and water in the
engine, the oil and water in the radiator may be still very high after just finishing the work.
Wait for the temperature falling down and follow the procedures to do the operations above.
z
To avoid hot water ejecting from the radiator, stop the engine, let the hot water cool, and
open the cover slowly to release the pressure. Never touch the radiator. Check the air
temperature in front of the radiator to gauge the temperature.
z
To avoid hot oil ejecting from the radiator, stop the engine, let the hot water cool, and open
the cover slowly to release the pressure. Never touch the radiator. Check the air temperature
in front of the radiator to gauge the temperature.
z
While the machine is warming-up, do not touch engine, silencer, tail pipe or relay to prevent
burn.
z
While the machine is warming-up, do not disassemble the water heat sensor of the engine,
oil heat sensor of the torque converter or the water pipe of air condition to prevent burn.
z
Never
let the harmful alkaline materials in the
coolant system touch your skin or eyes.
z
Choose a proper container to hold the liquid when
replacing the coolant, mobile oil of the engine, oil of
the transmission box and cleaning the parts. Please
refer to
8.20 Waste Materials,
in this chapter for
the methods to deal with the waste liquid.
z
Keep fire off when disassembling the connection pipe of the air condition compressor.
8.12 Examination and Repair of Hydraulic System
z
Lock the oil tank and other hydraulic equipment safely; release the pressure of all hydraulic
systems before examining the hydraulic system.
z
Never
bend or beat the high pressure hydraulic pipe.
Never
assemble the hard pipe and soft
pipe if they are bent abnormally or broken.
z
Routinely repair any loose or broken fuel oil circuits, lubricating oil circuits, the hard and
soft pipe of the hydraulic system. Leakage can cause fire, so routine maintenance is critical.
z
Examine the pipe system carefully (hard pipe and soft pipe), screw down the connectors
according to the proper torque. Do not examine a leak using your hands, rather use a board
or paper board. The leaking hydraulic liquid may penetrate your skin and cause death. If the
liquid splash onto your skin, the case of a physician trained for this kind of “burn” will be
immediately required.
